Typewriting machine



Oct. 14 1924.

A. G. F. KUROWSKI TYPEWRITING MACHINE Filed July 28. 1923 w w 11 m Emmy 1. 1:: 51 \MC 1.

Patented Oct. 14, 1924.

UNITED STATES PATENT OFFICE.

ALFRED G. F. KUROWSKI, 0F BROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

'IYIPEWRITING MACHINE.

Application filed July 28, 1923.

To all whom it may concern.

Be it known that I, ALFRED G. F. KURoW- SKI, a citizen of the United States, residing in Brooklyn Borough, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

The invention relates-to typewriting machines having so-called wing-scales, for exhibiting letter-space readings above the upper edge of the ribbon, immediately at the side of the printing point; and to machines in which, at each type-stroke, the ribbon is vibrated to cover the printing point.

The wing-scales are ordinarily set closely to the platen behind the ribbon and ribbonvibrator-guide, and heretofore have been formed on a plate secured to the rear face of the ribbonvibrator-guide. The latter, in turn, has been secured to the front rail of the platen-shift-frame. Such a mounting of the wing-scale-plate has been entirely satisfactory for ordinary work. It is sometimes desired, however, to use the machine for the cutting of stencils, and the stencil-pieces are commonly mounted in card-board frames of considerable thickness and stiffness. Often only two or three lines are required to be written on the stencil-cards, and insertion of the cards downward between the wing-scales and the platen, at the front of the machine, is the most convenient and expeditious manner of introducing the cards. In this use of the machine, and, owing to the thickness and stiffness of the card-frames, the cards may be jammed or unduly crowded by the wingscale-plate if the latter lies between the rib bon-vibrator-guide and the platen. Fur thermore, if, contrary to the present practice, the cards may be passed down between the wing-scale-plate and the platen with suflieient ease, it becomes practicable to em ploy certain simple devices as stops or gages to determine the initial setting of the card in the machine.

A feature of the invention is the provision of a wing-scale-plate of such shape that, although the wing-scales may lie in normal position behind the ribbon and ribbon-vibrator-guide, the plate may nevertheless be mounted on the front of the ribbon-vibratorguide, and the passage between the ribbonvibrator-guide and the platen thus be cleared for easy front-insertion of cards. Prefer- Serial No. 654.306.

ably the plate comprises a base or body-piece at the front of the ribbon-vibrator-guide and scale-carrying arms bowed laterally therefrom around and to the rear of the ribbon-vibrator-guide. A feature of the invention is a bowing of the scale-carrying arms in such Wise as to provide a long reach thereof between the scales and the points of attachment of the plate; so that, the arms, being of spring-material, will yield readily to allow thick cards to be passed freely between the scales and the platen.

A feature of the invention is the provision of stops or gages to determine an initial setting of the cards, from which setting the cards may be line-spaced for the writing of several lines thereon; and the provision of a mounting for the wing-scale-plate, such that the cards may be freely passed down, at the front ofthe platen, between the platen and the ribbon-vibrator-guide, until they come to rest on such stops or gages. Preferably the stops or gages are formed on the ribbon-vibrator-guide, and it is a furtherfeature of the invention that the fingers, which have heretofore been employed to hold the carriage to its seat on the shiftframe, may serve as the stops or gages for the cards. I

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a front view of the carriage and associated parts of a typewriting ma chine equipped according to the present invention.

Figure 2 is a view in side elevation, partly cross-sectional, of the apparatus shown in Figure 1.

The platen is journaled in the side plates 11 of a carriage 12, movable in letterfeed and return directions on a shift-frame 1 1.. The shift-frame 1 1 is mounted, and is movable between case-positions, on the main frame 15 by mechanism (not shown), but which may be similar to that shown in United States Letters Patent to William A. Dobson, NO.-1,335,956, dated April 6, 1920. A rail (not shown) provides a support and runway, at the rear, "for the carriage on the shift-frame. A cross-tie 17 forming partof the carriage, below the platen, forms a rail, by means of which the carriage is supported at its forward portion on rollers" 18 on a rail or runway '19 on the shift-frame.

The rail 17 is secured by screws 20 to cars 21 offset from the sidepieces '11 of the carriage 12.

A ribbonvibrator-guide 22, such as is found in the Underwood standard portable machine, is secured by .screws' 23 to the rail 19. The ribbon-vibrator-guide comprises a lower cross-piece 241-, inclined portions 25 and vertically-disposed fingers 26, on which the ribbon-vibrator has movement up and down. The vertical fingers26 are offset slightly forward from the inclined portions 25 of the ribbon-vibrator-guide to provide space for the upper portion of the wingscale or "scale-shield L2? and ribbon-vibrator. Offset rearward from the upper edge of the cross-portion '24 of the ribbon-vibrator:

guideare a pair of fingers 28 which overlie the upper edge of the'c'arriagerail'17, and thus hold the carriage'to the'rail 19 of the scales 31 lie between thefribbonvibratorguide and the platen. The cross-piece 29, however, lies in front of the ribbon-vibrator-guide, and the arms are turned laterally from the wing-scales with a slight forward offset at 32 beyond the side edges" of the fingers 26 of the ribbon-vibrator-guide, and are thence extended downward on a long curve to join the cro'ss-portion 29. From the cross-piece 29 of the shield two fingers 33 are extended vertically upward, and, at their upperends, are perforated at 34, to receive screws 35, by means of which the shield is; secured to the front face of the ribbon-vi-brator-guide at the junction of the vertical fingers 26 and inclined portions 25 of the latter.

As hereinbefore noted, the shield has heretofore been secured to the rear face of the riloloon-vibrator-guide. By curving the arms 30, however, so that the lower portion of the scale.shield may be located at the front of the ribbon-vibrator-guide,the ob struction of such lower portion of the scaleshield, heretofore offered to passage o-fcards downward at the front of thepl'atemis removed;'and, as shown in the drawings, the

card "36 maybe passed freely down "until its lower edge 'strikesthe fingers "2-8 on the ribbon vibrator-guide which hold ,the carriage tofthe shift-frame, v 'These fingers 28, therefore, serve. asv a seat or gage for det'ermining the initialloo'sition of the card. Thefingers 28 are sufii'ciently ifar below {the printing line to; permit ofthe writing of two or three lines on. the card or stencil, without bringing the. lower margin of the card tothe printing line -1 1' linefspace feed of the platen in the usual direction. ",l5u'reme, 't l neso e-neck weave to hold the card by its side margins to the platen, as shown in Figure 1 of the'drawm s.

Variations may be resorted to within the scopeof the invention, and portions of the I improvements may be used without others. Having 'thus described my invention, I claim: I I a 1. In a typewriting machine, a platen, a-

.carriage'for the platen, a frame on which. I

the carriage has movement in letter-feed and return directions, a ribbon-vibrator-guide on the frame at the front of the platen, a

wing-scale behind the ribbon-vibrator-guide,

and means for supportingthe scale on the front of the ribbon-vibratorguide.

2. Ina typewriting machine, a platen, a carriage for the platen, a frame on which the carriage has; movement in letter-feed and return directions, a ribbonvibratorguide on the frame at the front of the platen, a wing-scale behind the ribbonwibrator-guide, and means for supporting the scale on the front of the ribbon-vibratorguide, compris ng an arm offset forward from the scale and extending downward to the lower part of the ribbon-v'ibratoreguide.

3. 'In a typewriting machine, a platen, a carriage for the platen, a frame on which the carriage has movement in letter-feed and return directions, a ril'ibon-vibratorguide on the frame at the front of the platen, a wing-scale behind the ribbon-vibrator-guide, and means for supporting the,

scale onl the front of the ribbon-vibratorguide, comprising an arm having a lateral bend fromthe scale to the base of the ribbonwibrator-guide.

4. In a typewriting machine, aplaten, a carriage for th'eplaten, a frame on which the carriage has movement in letterfeed V and return directions, a ribbon-vibraton guide on the frame atthe front of the platen, a wing-scale behind theribbon-vibrator-guide, and; means; for supporting the scale on the front of the 'ribbon-vibrator n iguide, comprising an arm attached to the '=r1bbon v1brator;gu1de and curved laterally downjfrom the wing-scale to a "point below its point o'f attachment to tharibbon-vi- ,bratong'uide and thence up to such pointof attachment.

carriage"for the platen, a frame onwhich, it-hfe carriage i has movement in letterieed 5. In a typewriting machine, a platen, a

and return directions, a ribbonvibratorguide on the frame at the front of the platen, a wing-scale behind the ribbomvibrator-guide, and means for supporting the scale on the front of the ribbon-vibrator guide, comprising a resilient arm having a lateral bend from the scale to the base of the ribbon-vibrator-guide.

6. In a typewriting machine, a platen, a carriage for the platen, a frame on which the carriage has movement in letter-feed and return directions, a ribbon-vibratorguide on the frame at the front of the platen, comprising a base-piece and guidefingers extending upward therefrom, and a wing-scale-plate comprising a cross-arm or base-piece, and arms bowed laterally outward, from either end thereof, upward over the front of the ribbon-vibrator-guide basepiece, thence inward behind the guidefingers of the ribbon-vibrator-guide, and having on their ends the wing-scale.

7 I11 a typewriting machine, a platen, a carriage for the platen, a frame on which the carriage has movement in letter-feed and return directions, a ribbon-vibrator-guide on the frame at the front of the platen, comprising a base-piece and guide-fingers extending upward therefrom, and a wingscale-plate comprising a cross-arm or base piece, and arms bowed laterally outward, from either end thereof, upward ever the front of the ribbon-vibratorguide basepiece, thence inward behind the guide-lingers of the ribbon-vibrator-guide, and having on their ends the wing-scale; the tress-arm or base-piece of the wing-scaleplate having upwardly-projecting ears for attachment of the plate to the ribbon-vibrator-guide intermediate the upper and lower ends of the wing-carrying arms.

8. In a typewriting machine, a platen, a.

carriage for the platen, a frame on which the carriage has movement in letter-feed and return directions, a ribbon-vibrator-gnide on the frame at the front of the platen, a wingscale behind the ribbon-vibratorguide, means for supporting the scale on the front of the ribbon-vibrator-guide, and means at the rear of the ribbon-vibrator-guide for engagement with the lower edge of a card inserted downward between the guide and the platen, to arrest the card in given position.

9. In a typewriting machine, a platen, a carriage for the platen, a frame on which the carriage has movement in letter-feed and return directions a ribbon-vibrator-guide on the frame at the Iront of the platen, a wingscale behind the ribbon-vibratonguide, means for supporting the scale on the front of the ribbon-vibratorguide, and shoulders on the rear of the ribbon-vibrator-guide for engagement with the lower edge of a card inserted downward between the guide and the platen, to arrest the card in a given position.

10. In a typewriting machine, a platen, a carriage for the plate, a frame on which the carriage has movement in letter-feed and return directions, a ribbon-vibrator-guide on the frame at the front of the platen, a wingsoale behind the ribbon-vibrator-guide, means for supporting the scale on the front of the ribbon-vibratorguide, and fingers turned rearward out of the ribbon-vibratorguide for engagement with the lower edge of a card inserted downward between the guide and the platen, to arrest the card in a given position.

11. In a typewriting machine, a platen, a carriage for the platen, a shift-frame, having side plates, and a rail connecting the side plates at the front thereof, on which the carriage has movement in letter-feed and return directions, a ribbon-vibrator-guide secured to the rail at the front of the platen, a wing-scale behind the ribbon-vibratorguide, and means for supporting the scale on the front of the ribbon-vibrator-guide.

12. In a typewriting machine, a platen, a carriage for the platen, a frame on which. the carriage has movement in letter-feed and return directions, a ribbon-vibratorgnide on the frame at the front of the platen, a wingscale behind the ribbon-vibratorguide, means for supporting the scale on the front of the ribbon-vibrator-guide, a bar on the carriage extending longitudinally of the platen at the front of the latter, and paper lingers adjustable lengthwise of such bar to position to engage and hold to the platen the margins of a card inserted between the ribbon-vibrator-guide and the platen.

13. In a typewriting machine, a platen, a carriage for the platen, a frame on which the carriage has movement in letter-feed and return directions, a ribbon-vibrator-guide on the frame at the front of the platen, a wing scale behind the ribb0nvibrator-guide, means for supporting the scale on the front of the ribbon-vibrator-guide, means at the rear of the ribbon-vibrator-guide for engagement with the lower edge of a card inserted downward between the guide and the platen, to arrest the card in a given position, a bar on the carriage extending longitudinally of the platen at the front of the latter, and paper-fingers adjustable lengthwise of such bar to position to engage and hold to the platen the margins of a card arrested as aforesaid by said means at the rear of the ribbon-vibrator.

ALFRED G. F. KUROWSKI.

Witnesses:

JENNIE P. THoRNE, CATHERINE A. NEWELL. 

